bumptech/glide

Reading GIF information and getting playback callbacks

Open

#1499 opened on Oct 5, 2016

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GIFenhancementhelp wanted

Description

In a similar way to #192, this would be a feature request to get information from the loaded gif in terms of playback time, and being able to get callbacks on each frame to update the playback position. Think of implementing a video like UI on top of gif playback. Did look through the API and didn't find how this would be possible. Desired features:

  • Get total playback of the gif in milliseconds and/or frames.
  • Get current playback position in milliseconds and/or frames.
  • Seek to a specific playback frame.
  • Be updated on each frame through a callback.

Contributor guide

Tech stack
javaandroid
Domain
mobile
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Basic Android developmentFamiliarity with Glide libraryUnderstanding of GIF animation
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30
Research direction
Review the existing GIF decoding implementation in Glide, particularly the GifDrawable and GifDecoder classes. Investigate how frame timing is handled and if there are any existing callbacks. Based on the desired features, consider adding a new interface for playback callbacks and methods to query total duration and seek to specific frames. Look at related issues like #192 for prior context.